int cos{tan^(-1)sqrt((1-x)/(1+x))}dx=?

Evaluate: int cos {2 tan^(-1) sqrt((1-x)/(1+x))}dx

int cos(2tan^(-1)sqrt((1-x)/(1+x)))dx" is equal to "" (A) "(1)/(8)(x^(2)-1)+C, " (B) "(x^(2))/(4)+C , " ""(C)" (x)/(2)+C ," "(D) "(x^(2))/(2)+C

int tan^(-1)(sqrt((1-x)/(1+x))dx

Integrate : int tan^(-1) sqrt((1-x)/(1+x))dx

Evaluate: int tan^(-1)sqrt((1-x)/(1+x))dx

int tan^-1(sqrt((1-x)/(1+x)) dx

int tan^(-1)sqrt(x)dx

Evaluate : int"tan^(-1)sqrt((1-x)/(1+x))dx